Ehfeteency air brake



June 1o', 1924; 1,497,212`f l` J. M. HQUGH ET Al.

muia'snc AIR lemma Filed Feb. 20 1924 2 Small-Sheet Il m I l 5 m 534.6112? N l l mi; y l

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June l0;` 1924'. 1,497,212 J. M. HoUGH ET AL EMERGENY AIR BRAKE A2 Sheets-Sheet 2 Filed Feb. 2O 1524 Patented June 10, 1924.

JQSEPH I. ROUGH AND It. SHARP, F YQAKUH, TEXAS.

i EMERGENCY AIB BRAKE.

Application led February 20, 1924. Serial No. 894,044.

To all whom t may coawcm:

Be it known that we, JosnPH M. HoUoH and EDWARD M.SHARP, citizens of the United States, residing at Yoakum, in the'county of Lavaca, State of Texas, have invented a new and *useful4 Emergency Air Brake; and we do hereby declare the following to be a full,

clear, and exact description of the invention, such as will enable others skilled inthe art to which `it appertains to make and use the same. r f

The invention relates to air brake systems forv ra1iway cars -and has for its obJect to rovide a device of this character compris-Y mg a frangible member, preferably formed from cast iron piping and disposed adjacent the wheel of a car above the rail, whereb when said wheel leaves the rail, the frangib e member will come into engagement with the rail and be broken thereby allowing the exhaust of air from the air brake system and consequent setting of the emergency brakes. A further object is to form the frangible member from -a T-shaped pipe preferably cast from cast iron and having its transverse ortion positioned transversely of the rail a jacent the wheel of the car, and its other portion or arm inclining u wardly and away from the rail and providecpl with a weakened portion thereby insuring the breaking of the frangible member when the transverseportion thereof engages the rail. A further object is to provide means whereby the T-shaped frangible member ma be easily and quickly attached to a car, andY means whereby the escaping'air may be cut olffrom any articular emergency brake after breaking tliereof.

With the above and other ob'ects in view the invention resides in the com ination and arrangement of parts as hereinafter set orth,rshown in the drawin described and claimed, it being understoo that changes in the precise embodiment of the invention may be made within the scope of what is claimed without departing from the spirit of the invention.

In the drawings Y Figure 1 is a side elevation ofy one end of a conventional form of freight car, showing the emergency device applied thereto.

Fiire 2 is an end view of a portion ofthe reig t car, showing the device applied thereto.

Fi re 3 is an enla y the gible T-sh membenf f Vd front Aelevation of Figure 4 is an enlar ed side elevation of.

the u per end of the -shaped member.

Re erring to the drawing, the numeral 1R designates a conventional form of freight car, and 2 the air brake air pipe for controllin air brakes in the usual manner, that is while pressure is on the line, brakes are held in inoperative position, and when pressure is lost on the pipe line the brakes are set in the usual manner. It has been found that where the car wheels 3 leave the rails 4 incident to spreading Aoivthe rails or other causes, the train continues a considerable distance before this condition is discovered and the train is often turned over or ditched. To obviate. this difficulty and immediately set the brakes when the wheels leave-the rails, a

T-shaped pi e 5 is rovided, which pipe is formed pre erably rom a fran ible material, for instance cast iron. T e T-shape pipe 5 has its transverse portion 6 extending across the rail 2 adjacent the wheel 3 and is of suliicient length whereby no matter which side of the wheel 3 dro s in relation to the rail 2, it will be enga by said rail, and its grooved upwardly extending portion 7 roken at 8, at which point the portion 7 is considerably weakened by the groove, thereby allowing' the rapid liow of air from the 86 pipe line 2 through the branch pipe 9 to the` atmosphere, and conseqentl setting the brakes. The T-sha ed mem er 5 inclines upwardly at an ange other than a. perpendicular and consequently will easily brake when th the rail 4. The upper end o t ortion 7 of the T-shaped member is provi ed with spaced lugs 10 and 11( which lugs engage thel upper and lower si es Vof the supporting bracket 12 after the vertical portionl'has been assed through an enlar ed aperture 14 in t e bracket, and after wh''nthe key 15 is forced through said a erture 14 and the T shaped member secure y held in position. The lug 10 larger than the lug 11 and consequently during the breaking operation at 8, the strain, which is a twisting or bending one is primarily on the under side of the bracket 12. The upper end of the portion 13 of the T-shaped member 5 is internally threaded at 16 for the reception of the end 17 vofthe branch pipe 9, therefore it will be seen that the branch ipe may be easily and Vquickly applied to t e device. 'After the brakes have been set by the breaking of the T-'shaped member, andthe tryin by e same comes into en a ement with,

-dhiposed l adjacent the forward and the branch pipe 2, and a new sition, or the p e ced when the car 1s in a shop or The T-shaped like. pipes are prefer bly wheels of a truck, and preferably at di :a rical itions, thereb providing one fangible evice at one si e of truck at th forward side, and a fran ible device at t end of the truck at t e other side tereof, consequently, no matter which wheel leaves the rail, one of the devices will be o'rated. The T-sha d pipe 6 is preferably o' shown, an formed from cast iron s it will easily fracture and shatter at the point 8 or in any other place, and the ends of the transverse portions 6 are closed by plugs 19.

From the above it will be seen that a device is provided inl connection with the ai lyetemof a train whereby the brak 'will be immediatel set when an of t wheels of any of e cara leave e trac also the device may he easily and quickly a plied to a conventional form of ear with t modifying the of the cu.

liosed above l lhough the device has been illustrated and @scribed in connection with a freight car, ii muy be applied to eny kind of railroad c r.

The invention havineen set forth y what isf claimed as new and fnl isi- :HA brake ttingldevce, for railroad cars comprisin ;Tshaped" member having a chamber t e in and inverted, the transverse pbrtion of tl e T-shaped member being disrail, a supporting bracket, the upper end o said T-shaped mem rextending throu l an enlarged open' g fin said bracket, a ey ds osed in sand opening,lugs carried by the foga member and 'engag ing the upper en 1 j wer. sides of the sul porting bracket and a weakened. portion carried by the T-shaped member adjacent the i bracket. y

In testimony whereof we have signed our t nam'es to this specification in the presence of two subscribing witnesses.

, JOSEPH M. HOUGH.

EDWARD M. SHARP. Witneesw n. un, ,1. C. Mmmm 

